You can also have a look at the [http://code.google.com/p/fbug/issues/list?can=1&q=Type%3DEnhancement+-is%3Aopen+label%3Afixed1.6a1%2Cfixed1.6a2%2Cfixed1.6a3%2Cfixed1.6a4%2Cfixed1.6a5%2Cfixed1.6a6%2Cfixed1.6a7%2Cfixed1.6a8%2Cfixed1.6a9%2Cfixed1.6a10%2Cfixed1.6a11%2Cfixed1.6a12%2Cfixed1.6a13%2Cfixed1.6a14%2Cfixed1.6a15%2Cfixed1.6a16%2Cfixed1.6a17%2Cfixed1.6a18%2Cfixed1.6a19%2Cfixed1.6a20%2Cfixed1.6b1%2Cfixed1.6b2%2Cfixed1.6b3%2Cfixed1.6b4+OR+fixed%3A1.6 list of all enhancements of Firebug 1.6].

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You can also have a look at the [http://code.google.com/p/fbug/issues/list?can=1&q=Type%3DEnhancement+-is%3Aopen+fixed%3A1.6 list of all enhancements of Firebug 1.6].